rescript-lang / rescript-lang/rescript
Raising exceptions can generate invalid JavaScript
Open
Nobody has claimed this yet.
- Dominant language
- OCaml
- Stars
- 7.5k
- Forks
- 485
- Avg merge
- 1d 2h
- Merged PRs (30d)
- 55
Description
The following code:
let x = raise(Not_found)
Compiles to the following JavaScript:
// Generated by ReScript, PLEASE EDIT WITH CARE
throw {
RE_EXN_ID: "Not_found",
Error: new Error()
};
export {
x ,
}
/* x Not a pure module */
Which exports a variable x that does not exist on the final output.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by compiling the minimal ReScript example in the issue and inspecting the generated JavaScript around the top-level throw and export. Trace the compiler path that handles a raised exception at module scope; done means the generated JavaScript is valid and does not export the nonexistent x variable.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript
- Domain
- compilers
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Quiet
- Clarity
- Mostly clear
- Newbie friendliness
- 48/100